Subtract 21/35 from 30/12
1st number: 2 6/12, 2nd number: 21/35
30/12 - 21/35 is 19/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
30/12 = 30 × 35/12 × 35 = 1050/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
21/35 = 21 × 12/35 × 12 = 252/420 - Subtract the two like fractions:
1050/420 - 252/420 = 1050 - 252/420 = 798/420 - After reducing the fraction, the answer is 19/10
- In mixed form: 19/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12-21/35 30/12-42/35 30/24-21/35 30/12-21/70 90/12-21/35 30/12-63/35 30/36-21/35 30/60-21/35 30/84-21/35